Earthquake with magnitude of ML 1.2 on date 07-12-2021 and time 19:57:44 (Italy) in region 6 km NE Norcia (PG)

A magnitude ML 1.2 earthquake occured in region: 6 km NE Norcia (PG), on

  • 07-12-2021 18:57:44 (UTC)
  • 07-12-2021 19:57:44 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.83, 13.149 at 12 km depth.

The earthquake was located by: Sala Sismica INGV-Roma.

Search earthquakes: Any within 30 km radius

The values of hypocentral coordinates and magnitude may be revised at a later time as more information becomes available.

Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Norcia PG 6 4957 4957
Castelsantangelo sul Nera MC 7 281 5238
Preci PG 11 724 5962
Visso MC 12 1107 7069
Ussita MC 13 444 7513
Arquata del Tronto AP 14 1178 8691
Montegallo AP 15 523 9214
Cascia PG 17 3217 12431
Montemonaco AP 17 604 13035
Accumoli RI 17 667 13702
Cerreto di Spoleto PG 19 1075 14777
Sellano PG 19 1079 15856
Bolognola MC 20 142 15998

Municipalities with at least 50000 inhabitants

An earthquake occurred to
39 Km E of Foligno (57155 inhabitants)
49 Km W of Teramo (54892 inhabitants)
51 Km NE of Terni (111501 inhabitants)
57 Km NW of L'Aquila (69753 inhabitants)
69 Km E of Perugia (166134 inhabitants)
89 Km W of Montesilvano (53738 inhabitants)
93 Km SW of Ancona (100861 inhabitants)
96 Km W of Pescara (121014 inhabitants)
97 Km E of Viterbo (67173 inhabitants)
98 Km NE of Guidonia Montecelio (88673 inhabitants)
99 Km NW of Chieti (51815 inhabitants)
Recent and historical seismicity
Seismic hazard
Shakemap
Felt maps
Preliminary map of the earthquake effects from the web questionnaire

Preliminary map of the earthquake effects from the web questionnaire

This map shows the distribution of earthquake resentment in the area, expressed in terms of intensity on the MCS scale (Mercalli-Cancani-Sieberg). Intensities are determined using data from questionnaires collected on the website http://www.hsit.it. The intensities shown are determined considering all the reports received from each municipality, and are all the more reliable the greater the number of questionnaires. The collected data are subjected to an automatic statistical filter, but are not checked individually. In particular, intensities greater than or equal to the VI degree of the MCS or EMS scale require on-site verification by specialized personnel. The black star is the epicenter of the earthquake that occurred. This map is updated every time citizens fill out new questionnaires. The number of questionnaires processed to obtain this map, the date and time of the last update are shown at the top right.
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Reviewed
Rev100
ML 1.2 2021-12-07
18:57:44
42.8298 13.1493 12 2021-12-07
19:09:04
Sala Sismica INGV-Roma 98252821
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-12-07 18:57:44 ± 0.06
Latitude 42.8298 ± 0.0027
Longitude 13.1493 ± 0.0037
Depth (km) 12 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 98252821

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 319
Semi-minor axis of confidence ellipse (meter) 100
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 66
Circular confidence region, given by single value of horizontal uncertainty (meter) 320
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 57
Number of associated phases, regardless of their use for origin computation 27
Number of defining phases 27
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.17
Epicentral distance of station closest to the epicenter (degree) 0.02608
Epicentral distance of station farthest from the epicenter (degree) 0.393
Number of stations at which the event was observed 14
Number of stations from which data was used for origin computation 14
Magnitude information

ML:1.2

Field Value
Value 1.2
Uncertainty 0.3
Num. used stations 34
Type of magnitude ML
Reference to an origin 98252821
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-12-07 19:09:04
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.TERO.HHZ. 2021-12-07T18:57:58.09 0.3 undecidable manual S 122 0.393 92 -0.25 68
IV.RM33.EHZ. 2021-12-07T18:57:56.35 0.3 undecidable manual S 171 0.3238 93 0.03 71
IV.MF5.EHZ. 2021-12-07T18:57:55.35 0.3 undecidable manual S 55 0.277 93 0.44 65
IV.CESI.HHZ. 2021-12-07T18:57:54.34 0.3 undecidable manual S 314 0.25 94 0.21 70
IV.CSP1.EHZ. 2021-12-07T18:57:54.41 0.3 undecidable manual S 9 0.2653 94 -0.16 70
IV.GAVE.EHZ. 2021-12-07T18:57:53.90 0.3 undecidable manual S 234 0.232 95 0.3 69
IV.SMA1.EHZ. 2021-12-07T18:57:53.60 0.3 undecidable manual S 146 0.2419 94 -0.27 69
IV.LNSS.HHZ. 2021-12-07T18:57:53.84 0.3 undecidable manual S 199 0.2401 94 0 72
IT.MTCL.HGE. 2021-12-07T18:57:52.42 0.3 undecidable manual S 326 0.197 97 -0.15 71
IV.FDMO.HHZ. 2021-12-07T18:57:52.87 0.3 undecidable manual S 348 0.2113 96 -0.12 71
IV.TERO.HHZ. 2021-12-07T18:57:52.14 0.6 undecidable manual P 122 0.393 92 -0.25 45
IV.RM33.EHZ. 2021-12-07T18:57:51.43 0.3 undecidable manual P 171 0.3238 93 0.21 68
IV.FEMA.HNE. 2021-12-07T18:57:51.32 0.3 undecidable manual S 331 0.1511 104 0.1 73
IV.CSP1.EHZ. 2021-12-07T18:57:50.04 0.3 undecidable manual P 9 0.2653 94 -0.17 70
IV.MF5.EHZ. 2021-12-07T18:57:50.64 0.3 undecidable manual P 55 0.277 93 0.23 68
IV.SMA1.EHZ. 2021-12-07T18:57:49.51 0.3 undecidable manual P 146 0.2419 94 -0.3 69
IV.FDMO.HHZ. 2021-12-07T18:57:49.10 0.3 undecidable manual P 348 0.2113 96 -0.19 70
IV.LNSS.HHZ. 2021-12-07T18:57:49.74 0.3 undecidable manual P 199 0.2401 94 -0.05 72
IV.MTRA.EHZ. 2021-12-07T18:57:49.19 0.6 undecidable manual P 112 0.1952 97 0.17 47
IV.MC2.EHZ. 2021-12-07T18:57:49.74 0.3 undecidable manual S 20 0.0863 129 0.24 71
IV.GAVE.EHZ. 2021-12-07T18:57:49.68 0.3 undecidable manual P 234 0.232 95 0.03 72
IV.CESI.HHZ. 2021-12-07T18:57:49.97 0.3 undecidable manual P 314 0.25 94 0.01 72
IT.MTCL.HGE. 2021-12-07T18:57:48.90 0.3 undecidable manual P 326 0.197 97 -0.16 71
IV.NRCA.HHZ. 2021-12-07T18:57:48.32 0.1 undecidable manual S 278 0.0261 163 -0.17 96
IV.FEMA.HNE. 2021-12-07T18:57:48.19 0.3 undecidable manual P 331 0.1511 104 -0.09 73
IV.MC2.EHZ. 2021-12-07T18:57:47.36 0.1 undecidable manual P 20 0.0863 129 0.08 98
IV.NRCA.HHZ. 2021-12-07T18:57:46.77 0.1 undecidable manual P 278 0.0261 163 0.08 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HHE. ML:1.6 0.00055 0.06 AML other m 2021-12-07T18:57:48.44
IV.NRCA.HHN. ML:1.8 0.0008615 0.12 AML other m 2021-12-07T18:57:48.48
IV.NRCA.HNE. ML:1.5 0.0005015 0.38 AML other m 2021-12-07T18:57:48.44
IV.NRCA.HNN. ML:1.8 0.0008935 0.96 AML other m 2021-12-07T18:57:48.48
IV.MC2.EHE. ML:1.4 0.00025617445 0.1792 AML other m 2021-12-07T18:57:50.62
IV.MC2.EHN. ML:1.3 0.0002228495 0.5248 AML other m 2021-12-07T18:57:50.74
IV.FDMO.HHE. ML:0.7 3.1654705E-5 0.1152 AML other m 2021-12-07T18:57:53.42
IV.FDMO.HHN. ML:0.8 3.393007E-5 0.2432 AML other m 2021-12-07T18:57:53.08
IV.SMA1.EHE. ML:0.8 3.2802955E-5 1.344 AML other m 2021-12-07T18:57:53.97
IV.SMA1.EHN. ML:0.9 4.6692375E-5 1.1648 AML other m 2021-12-07T18:57:53.51
IV.GAVE.EHE. ML:0.7 2.5427155E-5 0.192 AML other m 2021-12-07T18:57:54.02
IV.GAVE.EHN. ML:0.6 1.9465475E-5 0.8832 AML other m 2021-12-07T18:57:54.34
IV.GAVE.HNE. ML:1.1 6.9992275E-5 0.448 AML other m 2021-12-07T18:57:54.34
IV.GAVE.HNN. ML:1.4 0.00013280762 1.3184 AML other m 2021-12-07T18:57:53.54
IV.LNSS.HHE. ML:0.9 4.0128455E-5 0.32 AML other m 2021-12-07T18:57:54.15
IV.LNSS.HHN. ML:1 5.55417E-5 0.8448 AML other m 2021-12-07T18:57:54.12
IV.LNSS.HNE. ML:1.2 8.0551175E-5 0.7424 AML other m 2021-12-07T18:57:53.62
IV.LNSS.HNN. ML:1.3 9.7987335E-5 0.4224 AML other m 2021-12-07T18:57:53.28
IV.CESI.HNE. ML:0.9 3.7662895E-5 0.5376 AML other m 2021-12-07T18:57:54.69
IV.CESI.HNN. ML:1.5 0.00014553395 1.152 AML other m 2021-12-07T18:57:54.68
IV.CESI.HHE. ML:1 4.3835085E-5 0.1408 AML other m 2021-12-07T18:57:54.69
IV.CESI.HHN. ML:1.2 7.4867235E-5 0.1408 AML other m 2021-12-07T18:57:54.69
IV.CSP1.EHE. ML:1.1 5.264695E-5 1.0752 AML other m 2021-12-07T18:57:54.59
IV.CSP1.EHN. ML:1.2 7.530197E-5 0.96 AML other m 2021-12-07T18:57:54.50
IV.MF5.EHE. ML:1.4 0.000118208305 1.6384 AML other m 2021-12-07T18:57:55.19
IV.MF5.EHN. ML:1.3 9.3398E-5 1.216 AML other m 2021-12-07T18:57:55.62
IV.RM33.HNE. ML:1.5 0.000122336565 1.4976 AML other m 2021-12-07T18:57:56.65
IV.RM33.HNN. ML:1.3 7.369233E-5 1.7408 AML other m 2021-12-07T18:57:56.19
IV.RM33.EHE. ML:0.8 2.451563E-5 0.7296 AML other m 2021-12-07T18:57:56.87
IV.RM33.EHN. ML:0.8 2.5168915E-5 0.6656 AML other m 2021-12-07T18:57:56.24
IV.TERO.HHE. ML:1.3 5.734648E-5 1.4592 AML other m 2021-12-07T18:57:58.59
IV.TERO.HHN. ML:1.3 5.6457275E-5 0.1792 AML other m 2021-12-07T18:57:58.53
IV.TERO.HNE. ML:1.7 0.0001422827 1.5488 AML other m 2021-12-07T18:57:58.22
IV.TERO.HNN. ML:1.6 0.00011421825 1.664 AML other m 2021-12-07T18:57:59.01
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download